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IEEE 802.1Q, often referred to as Dot1q, is the networking standard that supports virtual local area networking (VLANs) on an IEEE 802.3 Ethernet network. The standard defines a system of VLAN tagging for Ethernet frames and the accompanying procedures to be used by bridges and switches in handling such frames.
pfSense is a firewall/router computer software distribution based on FreeBSD. The open source pfSense Community Edition (CE) and pfSense Plus is installed on a physical computer or a virtual machine to make a dedicated firewall/router for a network. [ 3 ]
A VLAN access control list (VACL) provides access control for all packets that are bridged within a VLAN or that are routed into or out of a VLAN. Unlike regular Cisco IOS access control lists that are configured on router interfaces and applied on routed packets only, VACLs apply to all packets.
A VLAN can also serve to restrict access to network resources without regard to physical topology of the network. [a] VLANs operate at the data link layer of the OSI model. Administrators often configure a VLAN to map directly to an IP network, or subnet, which gives the appearance of involving the network layer.
A Private VLAN divides a VLAN (Primary) into sub-VLANs (Secondary) while keeping existing IP subnet and layer 3 configuration. A regular VLAN is a single broadcast domain, while private VLAN partitions one broadcast domain into multiple smaller broadcast subdomains. Primary VLAN: Simply the original VLAN. This type of VLAN is used to forward ...
It is a set of one or more infrastructure basic service sets on a common logical network segment (i.e. same IP subnet and VLAN). [18] Key to the concept is that the participating basic service sets appear as a single network to the logical link control layer by using the same SSID.
Multiple VLAN Registration Protocol (for provider bridges) IEEE 802.1ad: 01-80-C2-00-00-0E: Local LAN Link, never crosses another device 0x88CC Link Layer Discovery Protocol (primary) 0x88F7 Precision Time Protocol (PTP) version 2 over Ethernet (802.1AS) 01-80-C2-00-00-21: 0x88F5 GARP VLAN Registration Protocol (also known as IEEE 802.1Q GVRP)
Subnet Used for link-local addresses [ 5 ] between two hosts on a single link when no IP address is otherwise specified, such as would have normally been retrieved from a DHCP server 172.16.0.0/12